After the mud enters into the box, smaller sand constantly sediment to the bottom of box and is pulled out from the box.

进入箱体后细砂不断沉降到箱底被刮板不停的带出箱外。

youdao

After the mud enters into the box, smaller sand constantly sediment to the bottom of box and is pulled out from the box.

进入箱体后细砂不断沉降到箱底被刮板不停的带出箱外。

youdao